I am trying to modify the function checkboxAdd(txtBwayEDUGift) to add a $5.00 amount to the total cart order when the checkbox txtBwayEDUGift is checked. It is currently reducing the cart total $5.00 when unchecked, however, it is not adding $5.00 to the cart total when txtBwayEDUGift is checked. I can supply more information if needed. Thank you in advance for your help.